Assuming normal conditions, note whether each of the following substances would be (a) in greater relative concentration in the urine than in the glomerular filtrate, (b) in lesser concentration in the urine than in the glomerular filtrate, or (c) absent from both the urine and the glomerular filtrate. Use an appropriate reference as needed.
____________1. water
___________ 2. phosphate ions
___________ 3. sulfate ions
___________ 4. potassium ions
___________ 5. sodium ions
__________6. amino acids
___________ 7. glucose
___________ 8. protein
___________ 9. red blood cells
___________ 10. urea
____________11. uric acid
___________ 12. creatinine
___________ 13. white blood cells
___________ 14. nitrites
Solutions
VerifiedIn normal conditions, water would be in (b) lesser concentration in the urine than in the glomerular filtrate.
Water makes around 95 % of the urine. However, the urine contains less water than the glomerular filtrate (1) as part of the water is osmotically reabsorbed in the renal tubules.
Most of it is reabsorbed in the proximal convoluted tubule, and the rest in the descending limb of the loop of the nephron, distal convoluted tubule, and collecting ducts.